Drying apparatus.



PATENTED MAR. 19, 1907. 0. KOEPFF. "DRYING APPARATUS. APPLIQATION FILED APR.1o.19o5.

z SHEETS-snm 1'.

PATBNTED MAR. 19, 1907.

0. KOEPPF.

DRYING APPARATUS.4

APPLIoATIoN FILED APn.1o.19o5.

2 SHEETS-SHEET' a.

Mmm

UNITED sTATEs PigTENT oEErcE.

'OTTO KOEPFE, OF GPPINGEN, GERMANY.'

`D lavlNcl-r. APPARATUS. l

No. 847,786. i

To au whom it may concern/L' -Be it known that I, OTTO KOEPFF, a citizen. of the Kingdom of Wrtemberg, German Empire, residin at Gppingen, Wrtemberg, Germany, new anduseful Improvements in Drying Apparatus; 4and I do hereby declare the following to be a full, clear, `and exact description of the invention, such as will enable others skilled in the art4 to which it'appertain's to `make and use the same This invention lrelates to apparatus.4

of a drying apiparatus, as will be hereinafter fully describe and claimed.

In the accompanying drawings, forming a part '.of 'this specification, and in which like characters of reference indicate corresponding'parts, Figurel is a view in plan, partly in section, of an apparatus constructed-in accordance with the resent invention. Fig. 2 is a detail view. ig. 3 is a view in vertical longitudinal ,section through the apparatus exhibited in Fig. 1. Fig.V 4 isa view similar to `Fig. 3, .exhibiting certainfeatures omitted A in the latter figure and omitting others shown sys ' ring the material to the carriers.

therein. Fig. 5 is a plan view, artly in section, exhibiting more articular y the mechanism for actuating t e means for transferdifferent leads of the The drying-chamber l6 is `divided into a number of compartments by spaced horizon-- tally-disposed partitions- 7, that kterminate shortY of one end of the chamber, so that the hurdles 4, lying inv tiers or stages one above the other and carried by constant] -moving endlessba'nds or carriers 1, may4 e raised from one stage to the next higher. The carriers lfrest on carrying-rollers 3, and when transferred from 'are laterally guided by means of separate guide-rollers 2, with the object of Venabling an unimpeded lifting of the-hurdles from one stage to the other:

As will be seen from the drawings, the hurdles pass at a onto the leads -'of the carriers Specication of Letters, Patent. ippiictaonmedaprii10,1905. serainazaa'a'zs.

ave invented certain gelatin,4 glue,

12, the former of' which gear with the chains of one stage to the next higher" Patentedma'rch 19,1907. v

' lying in the lowermostpart ofthe chamber 6 and pass at the uppermost. tier laterally out again of the lchamber 'at b. 'The hurdles must always be removed from the carriers on the zigzag motion thereof and at the end of the rectilinear movement, then vraised to. the level vof the next stage, and again displaced laterally on the carriers. i

The-following apparatus serves for this:

At the ends of the drying-room there are arra ed hurdle-elevators'consisting of endless gui e-cl'i'ains 15 and 15, which carry radially projecting forked material-supporting arms 16, `that are arranged at regular distances apart equal to the height of the stages.- Those guide-'chainsare moved eriodically in suchv way that at the'instant t e sup ortingvarms 16 successively reachl the leve of they next stage a stoppage in the-movement of the chains takes place, which is utilizedfor ,dis-

Yplacing'laterally allof the hurdles raised by the elevators. The periodic movement of the elevators is secured from the main driveshaft 8 by means of pairs of bevel-wheels 9, shafts 10, and pairs of friction-disksll and which are mutilated at one part 1 1a of their periphery vin such manner that on the passage of these places on the disks l2 the latter remain stationary untill the recessed part hasbeen passed, as shown in Fig112. Toothed wheels 14 14a are'mountf` ed on the spindles 13 and'13a 15a and operate these latter. The 'recessesv` 11a are located at such places that the elevators remain stationary at'themoment when.y the arms 16 reach a height on a level with the stage, or tier. The horizontal fdisplacement ofthe hurdle then takes place in the following Way: Cranks 22 are mounted on vertical shafts 24, lying atthe same level as the hurdles in the various stages or tiers, which crankshave -at' their ends rollers l23, which on the rotation of the vshafts 24 bear laterally againstthe hurdles and push these from 0E the supporting-arms '16 so far laterally that they again rest on the carriers l, whereupon the shafts 24 are immediately turned back to their initial position,- in which the cranks 22 lie so far to the side that they do not irnpede4 the lifting of the hurdles. The turning of the cranks 22 and lshafts 24 to and fro is secured by means voitoothe'd wheels 21, carried by the shafts 24 .and double-toothed rack-bars '2 0, one at each end of Athe apparatus, gearing E,

of thedisksl2, i the elevators 15 zo and above the hurdle.

witheach pair of the wheels, which rack-b ars by means of reduced extensions 19 are adapt.- ed for sliding movements in suitable bearings and are connected with eccentric-rods 18, which are retracted by means of eccentrics 17, mounted on driving-shafts 8 and 8, and transmit this movement to the rack-bars 20, by which the toothed wheels 21, shafts 24,

and cranks 22 are actuated.

The driving mechanisms for the elevat ors and the cranks 22 are arranged at one side of y the drying-room, as shown in Fig. 3, and ina chamber separated from the room and also closed. Hot air is introduced in any suitable manner into the drying-room and is distributed by means of fans or blowers 5., arranged in a passage between eachtwo tiers of hurdles in such way that the gelatin or the like to be dried is encountered by the air beneath The fans or blowers 5 may be operated in any preferred manner, .preferably by means of a cord or belt carried over all of the driving-belt pulleys arranged on the fan-axles outside the drying-room.

Motion is imparted from the shaft 8 to the shaft 8*i by a shaft 30, the terminals of which carry beveled gears 29, meshing with similar gears carried by the shafts 8 and in Fig. 5. The toothed wheels 14a and turn- 3o ing with the spindles 13a are driven by the link chains 15a, which in turn are driven by the toothed Wheels 28a, mounted upon the spindles 27, and these latter receive their motion from the chains 15 by means of the 3 5 toothed wheels 28 engaging therewith.

The carriers 1 may be operated in any suitable manner and maintained in a stretched condition by means of any suitable 'tensioning mechanism. In this instance the car- 40 riers are shown as passing around idlers 26,

thence between idlers 26a, and thence around idlers 26b and 26C. The shaft that carries one of the idlers 26a also supports a pulley 31,

which is engaged by a beltfthat passes around 4 5 a smaller pulley 31a, mount ed on the shaft 8a,

the latter being driven by the eccentric 17a.

The elevators and crank mechanisms for lifting and displacing the hurdles arranged at both ends of the drying-room are so connect- 5o ed with one another that the lifting of all the hurdles takes place simultaneously and also all the hurdles lying on the supporting-arms 16 are-simultaneously displace The size of the drying-room and number of 5 5 superimposed drying-.chambers and stages or tiers arranged therein isdetermined substantiallyby the general constitution or condition of the material to be dried and to the desired degree, of drying.

It is evident that for lifting the material to be dried from one stage or tier to the next and also for laterally displacingr the same other means than those hereinbefore set forth may of course be employed.

Having thus fully described my invention,

8a, as shown vendless conveyers having leads disposed in riers having leads disposed in successive planes, means for elevating material to the 7o 'successive leads, and fmeans for transferring material from the elevating means to the succeeding leads.

2. In a drying apparatus, a plurality of successive planes, means for elevating material to the successive leads, and means for transferring material from the elevating means to the succeeding leads. A 3. In a drying apparatus, a plurality of 8o carriers having leads disposed in successive planes, intermittently-operating means for elevating material to the successive leads, and means for transferring material from the elevating means tol the succeeding leads.

4. In a drying apparatus, a plurality of carriers having leads disposed in successive planes, means for elevating material to the successive leads, means for transferring material from the elevating means to the suc- 9o ceeding leads, and means for applying heat to the material.

5. In a drying apparatus, a plurality of endless carriers having leads disposed in successive planes, a plurality of elevators provided with material-supporting members?, and means for causing the movement of the elevators to be stopped as the supporting members reach the successive planes occupied by the leads of the carriers.

6. In a drying apparatus, a plurality of endless carriers having leads disposed in successive planes, a plurality of elevators provided with material-supporting members, means for causing the movement of the elevators to be stopped as the supporting members reach the successive'planes occupied by the leads of the carriers, and means for transferring material elevated by the supporting members from preceding leads of the carriers to succeeding leads.

7. Ina drying apparatus, a plurality of endless carriers having leads disposed in parallel successive planes, a plurality of elevators provided with material-supporting members, means for causing the movement of the elevators to be stopped as the supporting members reach the successive planes occupied by the leads of the carriers, and means for transferring material elevated by the supporting members from preceding leads of the carriers to succeeding leads.

8. In a drying apparatus, a plurality of endless carriers having leads disposed in successive planes, a plurality of elevators provided with material-supporting members, means for causing the movement of the elcvators to be stopped as the supporting members reach the successive planes occupied by the leads of the carriers, means for translOO ICS

IIO

ferring material elevated by the sup orting members from preceding leads of tiie earriers to succeeding leads, and means for sup- Elying a drying medium to the material .5 eing treate 9. A drying apparatus embodying endless earriers disposed in a plurality of planes, and a lurality of elevators provided with materia .-supporting members coacting with 1o the carriers.

10. In a dlying apparatus embodying` endless carriers 'sposed in a plurality of planes,

Witnesses:

a plurality of elevators provided with material-supporting members eoacting With the carriers, and means for transferring elevated 15 material from the supporting` members on to the successive leads lof the carriers. f

In testimony whereof I hereunto aHiX my signature in the presence of tWo Witnesses.

oTTo KoEPFF.'

RUDOLF BRECHT, MAX KORBLER. 

